Electronic keyboard musical instrument

Musical instruments – Keyboard type

Design Patent

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Design Patent

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D0572300

CLAIM:
The ornamental design for an electronic keyboard musical instrument, as shown.

REFERENCES:
patent: D313034 (1990-12-01), Koide
patent: D416934 (1999-11-01), Nagayama
patent: D417884 (1999-12-01), Katsumata
patent: D441003 (2001-04-01), Chan
patent: D444492 (2001-07-01), Saito
patent: D461837 (2002-08-01), Chan
patent: D483793 (2003-12-01), Kitazawa
patent: D506772 (2005-06-01), Nagayama
patent: D510380 (2005-10-01), Adam et al.
patent: D554690 (2007-11-01), Utsunomiya
patent: D554691 (2007-11-01), Ogino
Related U.S. Appl. No. 29/294,231, filed Dec. 28, 2007; Inventor: Kazuhito Sakaguchi et al.

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